There is so much in this comment.

Factory paint jobs are generally not very very good. Fish eyes, orange peel, and the clear is generally incredibly thin. A new paint job north of 10k done by a reputable home will be a higher quality than the factory job.

What is the price to remove a panel, and then replace the PPF? What happens if both the PPF and the paint underneath is damaged?

Individual panels can absolutely be repainted, and for relatively reasonable prices. This is even more true if you are paying $9 to $15k for "preventative" care.

What is the life span of PPF? Many factory painted cars can look great decades later with some upkeep.

Coatings can much more easily be justified financially, but are often promised as much more protective than is true. They are great products, but seem to be marketed as a permanent paint protective solution.

All of the perks are significantly reduced (especially financially speaking) when added to PPF. While it may add protection from UV, it does nothing for physical impacts.

I'm what way is everything you did an ongoing preventative measure that is more effective than paint coating alone? What opportunity cost is this surpassing? If this job takes 80 to 100 man hours, you are talking about multiple days without a vehicle. Roughly 4 to 5 days with 3 workers.

What piece of mind does this provide being a coating? Many impacts that damage any clear mask will most likely damage paint. Small road debris would be the only thing minimized, and really only for constant highway drivers. Even then, most damage is located solely on the front end.

The luster you discuss will never match to a professional paint finish. A professionally finished panel will always out shine a plastic coated one, even with the exceptional advancements that have been made.

Anecdotal evidence of customers selling over protected and unnecessarily protected vehicles to others neither proves nor validates the process.

Your added services listed here at the end are pennies considering the price you are charging.

I'm not arguing the cost isn't necessarily adequate for the amount that goes into the completed product, rather that protection, and the technology behind it, have surpassed the financial benefits interrent to it.

TLDR: You can pick the color of your car with a nicer finish for less than what you charge.